2pe6 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
UBC9_HUMAN Accepts the ubiquitin-like proteins SUMO1, SUMO2, SUMO3 and SUMO4 from the UBLE1A-UBLE1B E1 complex and catalyzes their covalent attachment to other proteins with the help of an E3 ligase such as RANBP2 or CBX4. Can catalyze the formation of poly-SUMO chains. Necessary for sumoylation of FOXL2 and KAT5. Essential for nuclear architecture and chromosome segregation.[1][2][3][4][5][6][7]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The SUMO E2 Ubc9 serves as a lynchpin in the SUMO conjugation pathway, interacting with the SUMO E1 during activation, with thioester linked SUMO after E1 transfer and with the substrate and SUMO E3 ligases during conjugation. Here, we describe the structure determination of a non-covalent complex between human Ubc9 and SUMO-1 at 2.4 A resolution. Non-covalent interactions between Ubc9 and SUMO are conserved in human and yeast insomuch as human Ubc9 interacts with each of the human SUMO isoforms, and yeast Ubc9 interacts with Smt3, the yeast SUMO ortholog. Structural comparisons reveal similarities to several other non-covalent complexes in the ubiquitin pathway, suggesting that the non-covalent Ubc9-SUMO interface may be important for poly-SUMO chain formation, for E2 recruitment to SUMO conjugated substrates, or for mediating E2 interactions with either E1 or E3 ligases. Biochemical analysis suggests that this surface is less important for E1 activation or di-SUMO-2 formation, but more important for E3 interactions and for poly-SUMO chain formation when the chain exceeds more than two SUMO proteins.
Structure and analysis of a complex between SUMO and Ubc9 illustrates features of a conserved E2-Ubl interaction.,Capili AD, Lima CD J Mol Biol. 2007 Jun 8;369(3):608-18. Epub 2007 Apr 6. PMID:17466333[8]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑Yasugi T, Howley PM. Identification of the structural and functional human homolog of the yeast ubiquitin conjugating enzyme UBC9. Nucleic Acids Res. 1996 Jun 1;24(11):2005-10. PMID:8668529
↑Tatham MH, Jaffray E, Vaughan OA, Desterro JM, Botting CH, Naismith JH, Hay RT. Polymeric chains of SUMO-2 and SUMO-3 are conjugated to protein substrates by SAE1/SAE2 and Ubc9. J Biol Chem. 2001 Sep 21;276(38):35368-74. Epub 2001 Jul 12. PMID:11451954 doi:10.1074/jbc.M104214200
↑Kim YE, Kim DY, Lee JM, Kim ST, Han TH, Ahn JH. Requirement of the coiled-coil domain of PML-RARalpha oncoprotein for localization, sumoylation, and inhibition of monocyte differentiation. Biochem Biophys Res Commun. 2005 May 13;330(3):746-54. PMID:15809060 doi:10.1016/j.bbrc.2005.03.052
↑Kuo FT, Bentsi-Barnes IK, Barlow GM, Bae J, Pisarska MD. Sumoylation of forkhead L2 by Ubc9 is required for its activity as a transcriptional repressor of the Steroidogenic Acute Regulatory gene. Cell Signal. 2009 Dec;21(12):1935-44. doi: 10.1016/j.cellsig.2009.09.001. Epub, 2009 Sep 8. PMID:19744555 doi:10.1016/j.cellsig.2009.09.001
↑Figueroa-Romero C, Iniguez-Lluhi JA, Stadler J, Chang CR, Arnoult D, Keller PJ, Hong Y, Blackstone C, Feldman EL. SUMOylation of the mitochondrial fission protein Drp1 occurs at multiple nonconsensus sites within the B domain and is linked to its activity cycle. FASEB J. 2009 Nov;23(11):3917-27. doi: 10.1096/fj.09-136630. Epub 2009 Jul 28. PMID:19638400 doi:10.1096/fj.09-136630
↑Capili AD, Lima CD. Structure and analysis of a complex between SUMO and Ubc9 illustrates features of a conserved E2-Ubl interaction. J Mol Biol. 2007 Jun 8;369(3):608-18. Epub 2007 Apr 6. PMID:17466333 doi:10.1016/j.jmb.2007.04.006
↑Sekiyama N, Arita K, Ikeda Y, Hashiguchi K, Ariyoshi M, Tochio H, Saitoh H, Shirakawa M. Structural basis for regulation of poly-SUMO chain by a SUMO-like domain of Nip45. Proteins. 2009 Dec 4. PMID:20077568 doi:10.1002/prot.22667
↑Capili AD, Lima CD. Structure and analysis of a complex between SUMO and Ubc9 illustrates features of a conserved E2-Ubl interaction. J Mol Biol. 2007 Jun 8;369(3):608-18. Epub 2007 Apr 6. PMID:17466333 doi:10.1016/j.jmb.2007.04.006
